Combined targeted therapy and immunotherapy in anaplastic thyroid carcinoma with distant metastasis: A case report

Figure 1 Pathological features. A: First, the border was unclear, invasive growth was wide, and there was no capsule, and second, the tumor was extensively necrotic; B: Nuclear pleomorphism was evident, cells were small, and diffusely distributed, and finally, mitotic activity was high and invasion was strong.